The spec sheet

Extracted from Speechmatics | AI Voice Agents's own site and policies — “Not published” means we looked and it isn't there.

Free trial

✓ Free trial · no card

Starting price

Free plan

Free tier includes up to 3,480 free minutes/month; usage-based pricing scales beyond that, no credit card required to start

Refund policy

⚠ Not published

Privacy & your data

⚠ Not published

Support

Company

Founded 2006 · HQ: Cambridge, UK

Best for: Developers building voice AI agents needing accurate, fast speech-to-text across many languages

Standout: Sub-second real-time transcription across 56+ languages with speaker diarization and native integrations for LiveKit, Vapi, and Pipecat

Speechmatics | AI Voice Agents vs. its closest rivals

Top-scored alternatives in Speech-to-Text API for Voice AI.

Tool · TrustScore	Free trial	From	Refund	Privacy
Speechmatics \| AI Voice Agents 8.5/10 ★ 3 (2)	✓ Free trial · no card	Free plan	⚠ Not published	⚠ Not published	Compare →
Luminar AI 9.5/10 ★ 4.6 (6839)	✓ Free trial	—	✓ 30 days	Policy published	Compare →
ArchiVinci 9.5/10 ★ 4.3 (10)	✓ Free trial · 3 free renders	Free plan	✓ Money-back guarantee	⚠ Not published	Compare →
Redraw 9.5/10 ★ 3.8 (2)	✓ Free trial · no card	$15/mo	✓ 7 days	⚠ Not published	Compare →
Aperty 9.5/10 ★ 3.8 (2)	✓ Free trial	$44/mo	✓ 14 days	Policy published	Compare →

Our 5-point vetting, with evidence quotes from their own pages.

—Money-back guarantee verified

✓Free trial confirmed

“…ble API and native integrations to power AI voice agents. ✅ No credit card required ✅ Free tier included ✅ Upgrade when you scale Get your free…”

✓Reachable human support

“…How can I talk to someone? Please feel free to email us at [email protected] - we're here to help! Product Speech to Text Real-Time Lang…”

✓No fine-print return traps

✓No unrealistic marketing claims

Vetted 2026-07-21 · How we compare →